Ross Reynolds talks with activist Elizabeth Campbell about her voter initiative to fund planning to build a monorail line in Seattle. Then, Reynolds talks with Crosscut's Knute Berger about the political history of the monorail.

Ross Reynolds interviews Matt Bai, national political correspondent for Yahoo News, about his book on the Gary Hart debacle.

If you know who Hart is, you probably remember his flame-out campaign for president. In 1987 the Democratic Senator from Colorado was running against George H.W. Bush was ahead by double digits. But when the Miami Herald ran a story about a supposed affair Hart was having with model Donna Rice, his campaign fell apart within a week.

Ross Reynolds marks the 50th Anniversary of the founding of the Friends of the Pike Place Market by speaking with international market consultant David O'Neil. O'Neil says the Friends' efforts to save Pike Place Market turned the tide for public markets all over America.

Marcie Sillman talks with Steven Johnson, author of "How We Got to Now: Six Innovations That Made the Modern World," about the technological innovations that led to widespread clean water in America, despite the E. coli in Mercer Island's drinking water this month.

SEATTLE -- This month the Great Northern Tunnel, which runs through the heart of the city of Seattle, turns 110 years old. Back in the fall of 1904, when it was finished, the mile-long tunnel was the tallest and widest in the United States.

The Great Northern Tunnel took a year and a half to build and cost $1.5 million back in 1904.

Ross Reynolds speaks with Dave Waggoner, who's leaving as airport director at Paine Field in Everett after 22 years on the job.

Paine Field was a Depression-era project as part of the Works Progress administration. It was believed at the time that it would be a "super airport." Although Sea-Tac has turned into Western Washington's super airport, Paine Field actually generates more economic activity.